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Scratchy sound on certain notes right side only?

What could cause a "scratchy" sound on certain notes at certain volume, be it voice, piano, but especially with saxophone, right side only? I have switched cables, no luck. Checked all connections. I know its not the speakers because if I switch l/r cables from the phone preamp out the noise comes from the left speaker. Equipment is jr michell orbe with sme iv.iv arm & clearaudio virtuoso cartridge. Tracking force etc seems to be right on. Any help would be appreciated.
Thanks
yohjo
newbee
4,751 posts
 
Yohjo, Agreed if no other sources produce the problem it has to be in the phono stage. Doesn't your EAR phono-pre have tubes? Are you still using that - its listed in your systems? If you are, check the tubes. :-)
yagbol2
66 posts
 
Definitely it is a bad tube or tubes! either pre-amp or phono stage. Best to test all tubes in the path.
yohjo OP
83 posts
 
Sorry guys, I should have added what the phono pre is, the EAR is gone, I am using a ps audio gcph. It's definitely the gcph. Not the 99 as no problems on any other source. Gain on the 99 is in same position as it always has been.
unsound
7,315 posts
 
cartridge?
dan_ed
2,451 posts
 
Ah, so you're Magnum does not have the phono stage.
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